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Nexperia USA Inc. BZX84W-B13-QF
- Part No.:
- BZX84W-B13-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B13-QF.pdf
- Description:
- DIODE ZENER 13V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:8,789
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Product details
Overview
BZX84W-B13-QF from Nexperia is a ±2 % tolerance Zener voltage regulator diode rated at 13 V nominal working voltage, housed in an SOT323 (SC-70) surface-mount package, with 275 mW total power dissipation and qualified to AEC-Q101 for automotive voltage reference and overvoltage protection circuits.
For engineers reviewing the BZX84W-B13-QF datasheet, BZX84W-B13-QF pinout, BZX84W-B13-QF application, or BZX84W-B13-QF equivalent, this part serves as a precision 13 V shunt regulator in low-power automotive ECUs, sensor biasing networks, and high-frequency voltage clamping where tight tolerance and thermal stability are required.
Technical Context
This device operates as a reverse-biased shunt regulator with a nominal Zener voltage of 13.0 V at 5 mA test current, differential resistance of 170 Ω (max), and temperature coefficient of +9.4 mV/K (typical). It maintains regulation across −55 °C to +150 °C ambient range and supports non-repetitive surge currents up to 80 A (100 µs pulse).
Designed for AEC-Q101 compliance, it delivers stable 13 V reference performance under automotive transients, with reverse leakage current ≤100 nA at 8 V and forward voltage ≤0.9 V at 10 mA - enabling reliable operation in compact, thermally constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.7 V to 13.3 V at IZ = 5 mA - ensures precise 13 V regulation within ±2 % tolerance for stable reference generation |
| Differential Resistance (rdif) | ≤170 Ω at IZ = 5 mA - minimizes output voltage variation under load current changes |
| Temperature Coefficient (SZ) | +9.4 mV/K (typ) - enables predictable, positive drift compensation in temperature-sensitive circuits |
| Reverse Leakage (IR) | ≤100 nA at VR = 8 V - guarantees low quiescent current in standby or battery-powered systems |
| Total Power Dissipation (Ptot) | 275 mW on FR4 PCB - defines maximum continuous DC power handling in standard SMT layout |
| Junction-to-Ambient Thermal Resistance (Rth(j-a)) | 455 K/W - determines steady-state temperature rise above ambient at rated power |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W at tp = 100 µs - supports transient overvoltage suppression without failure |
Pinout & Package
The BZX84W-B13-QF is packaged in a leadless SOT323 (SC-70) surface-mount plastic case measuring 2.2 mm × 1.35 mm × 0.95 mm, optimized for automated reflow assembly and space-constrained automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connected to lower-potential node in shunt regulator configuration |
| 2 | Not Connected (n.c.) | Electrically isolated terminal - must remain unconnected to avoid parasitic coupling or mechanical stress |
| 3 | Cathode (K) | Zener breakdown terminal; connected to regulated voltage rail and current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 |
| ±2 % Zener voltage tolerance | Reduces need for post-production trimming in 13 V reference designs, improving yield and consistency |
| SOT323 ultra-small footprint | Enables placement in dense control modules (e.g., body controllers, ADAS sensors) with minimal PCB area |
| Low capacitance (2.5 pF at 1 MHz) | Maintains high-frequency response in RF biasing and fast transient clamping applications |
| 150 °C maximum junction temperature | Supports operation in engine bay and powertrain environments without derating below full rating |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 13 V reference for microcontroller ADC inputs and LIN bus transceiver biasing in BCMs exposed to 12 V battery fluctuations. IC Role / Device Role / Timing Role: Shunt voltage regulator maintaining fixed reference potential despite load and supply variations. Use Value: Enables accurate analog sensing and communication integrity across −40 °C to +125 °C operating range with AEC-Q101 assurance. |
Use Scenario: Biasing precision temperature and pressure sensors in factory automation I/O modules requiring low-drift references. IC Role / Device Role / Timing Role: Low-leakage Zener element establishing calibrated excitation voltage for bridge-based transducers. Use Value: Delivers <100 nA reverse leakage at 8 V and +9.4 mV/K tempco for sub-0.1 % full-scale error over industrial temperature range. |
| USB-C Power Delivery Clamp | High-Frequency RF Amplifier Bias |
Use Scenario: Clamping transient overvoltages on USB-C VBUS lines during hot-plug events in automotive infotainment systems. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing short-duration surges exceeding 13 V threshold. Use Value: Withstands 40 W non-repetitive peak power (100 µs) and exhibits only 2.5 pF capacitance to preserve signal integrity. |
Use Scenario: Setting DC bias point for GaAs FET amplifiers in 2.4 GHz Wi-Fi front-end modules within telematics units. IC Role / Device Role / Timing Role: Low-noise, low-capacitance voltage reference stabilizing amplifier operating point. Use Value: 2.5 pF junction capacitance and 170 Ω dynamic impedance minimize RF loading and phase perturbation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C13-Q | ±5 % tolerance (12.4 V–14.1 V), higher max leakage (50 nA at 0.7×VZ), identical package and power rating | Acceptable where cost sensitivity outweighs precision; less suitable for ADC reference or tight-tolerance biasing | Select when budget constraints dominate and system-level calibration compensates for wider VZ spread |
| MMSZ5243B-TP | ±5 % tolerance, SOD-123 package (larger footprint), 500 mW Ptot, 13 V nominal, not AEC-Q101 qualified | Used in commercial-grade power supplies; lacks automotive qualification and thermal performance in SOT323 | Choose only for non-automotive, higher-power applications where board space permits larger package |
Compared with BZX84W-C13-Q, the BZX84W-B13-QF offers tighter regulation and lower tempco for critical references; versus MMSZ5243B-TP, it provides AEC-Q101 assurance and superior thermal density in half the footprint - making it optimal for automotive electronics where size, reliability, and precision intersect.
Availability
BZX84W-B13-QF is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, USB-C power delivery protection, and RF amplifier biasing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX84W-B13-QF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZX84W-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage regulation and transient suppression in harsh automotive environments.
FAQ
What is the maximum continuous reverse current the BZX84W-B13-QF can sustain at 25 °C?
The device does not specify a maximum continuous reverse current (IZ) limit; instead, its safe operating area is defined by total power dissipation. At 25 °C ambient and 275 mW Ptot, the maximum sustainable reverse current is approximately 21.2 mA (275 mW ÷ 13 V), assuming nominal Zener voltage and no thermal derating.
Is the second pin (n.c.) electrically isolated or internally tied to substrate?
Pin 2 is explicitly designated "not connected" in the official Nexperia datasheet and has no internal electrical connection to anode, cathode, or die substrate. It is a mechanically present but electrically floating terminal - PCB layout must leave it unconnected to prevent unintended coupling or solder bridging.
How does the +9.4 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
Over this 165 K range, the Zener voltage shifts by approximately +1.55 V (9.4 mV/K × 165 K), resulting in a final VZ of ~14.55 V at +125 °C. This predictable positive drift allows system designers to compensate via circuit design or calibration, unlike negative-coefficient Zeners that collapse near zero volts at high temperature.
Can BZX84W-B13-QF be used in place of a 1N4742A in an existing design?
No - the 1N4742A is a through-hole DO-41 device rated for 1 W, while the BZX84W-B13-QF is a 275 mW SOT323 part with different thermal behavior, footprint, and surge capability. Direct substitution requires verifying power dissipation margins, PCB layout compatibility, and transient energy handling; it is not a drop-in replacement.
BZX84W-B13-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W-Q
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 13 V
- Tolerance:
- ±2.31%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-B13-QF FAQ
1.How can I place an order for BZX84W-B13-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B13-QF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BZX84W-B13-QF reliable?
The price and inventory of BZX84W-B13-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-B13-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-B13-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B13-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B13-QF?
BZX84W-B13-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B13-QF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BZX84W-B13-QF?
For technical support, including BZX84W-B13-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B13-QF requirements.
6.How does Aetrix verify that BZX84W-B13-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-B13-QF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZX84W-B13-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-B13-QF?
All BZX84W-B13-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B13-QF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BZX84W-B13-QF part is unused and in its original packaging.
Return procedure for BZX84W-B13-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B13-QF Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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SMAZ12-13-F
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